BS 5857-1.1 80th Edition, March 31, 1980
Methods for measurement of Fluid flow in closed conduits, using tracers - Part 1: Measurement of water flow - Section 1.1 General
Includes all amendments and changes through Reaffirmation Notice , January 1, 2008
Additional Comments: SAME AS ISO 2975-1
Published By:British Standards Institution (BSI)
Compares dilution methods and methods based on transit time measurement. Also covers choice of tracers and measuring/mixing lengths.